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珠三角地区是改革开放的前沿,经过30多年来的发展,成为我国城市最为密集的地区之一,城市之间的联系也日益广泛。当前珠三角地区高速公路网密集,城市之间的来往大部分通过高速公路网进行。同时,珠三角地区也是我国国际联系最密切的地区之一,在全球化影响下珠三角地区城市网络特征发生了一些重要变化。文章依据珠三角地区城市客货运流量、高速公路车流量、机场客流量等主要交通流量数据,剖析了珠三角地区城市网络的内外部联系。研究表明,广州、东莞、深圳、佛山在区域城市网络中处于重要节点位置,广州—东莞、东莞—深圳、广州—深圳、广州—佛山联系度最高。在外部联系方面,国内主要与珠三角地区有直接联系的城市主要分布在长江沿线以及华南地区;国际联系最紧密的城市主要分布于东南亚地区,与欧美城市直连联系的程度相对较弱。与传统时期城市网络特征相比发生了城市网络均衡化、城市重心向东转移、外部联系日益强化的变化。
The Pearl River Delta region is at the forefront of reform and opening up. After more than 30 years of development, it has become one of the most densely populated cities in our country. The connection between cities is also increasingly widespread. At present, the expressway network in the Pearl River Delta Region is densely populated, and most of the inter-city traffic is through the expressway network. At the same time, the Pearl River Delta is also one of the most interconnected areas in China. Under the influence of globalization, some important changes have taken place in the characteristics of urban networks in the Pearl River Delta. The paper analyzes the internal and external relations of the urban network in the Pearl River Delta based on the data of major traffic flows such as passenger and freight traffic volume, expressway traffic volume and airport traffic volume in the Pearl River Delta Region. Research shows that Guangzhou, Dongguan, Shenzhen and Foshan are important nodes in the regional urban network. Guangzhou-Dongguan, Dongguan-Shenzhen, Guangzhou-Shenzhen, Guangzhou-Foshan have the highest contact degree. In terms of external links, the major cities in China that have direct links with the PRD are mainly located along the Yangtze River and in southern China. The most closely linked cities in the world are mainly located in Southeast Asia, with relatively weak links with European and American cities. Compared with the characteristics of urban network in the traditional period, the changes of urban network equilibrium, the eastward shift of urban center of gravity and the intensified external relations have occurred.